XML 26 R13.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Employee Benefit Plans | 9 Months Ended
--- | ---
Sep. 30, 2017
Retirement Benefits [Abstract] |
Pension and Other Postretirement Benefits Disclosure [Text Block] | Employee Benefit Plans Pension and Postretirement Plans. We sponsor both funded and unfunded domestic and foreign defined pension and other postretirement benefit plans, and defined contribution plans. Contributions to our plans were as follows:
| Quarter Ended September 30, |  | Nine Months Ended September 30,
(Dollars in millions) | 2017 |  | 2016 |  | 2017 |  | 2016
Defined benefit plans | $ | 1,929 |  |  | $ | 18 |  |  | $ | 2,008 |  |  | $ | 125 |
Defined contribution plans | 86 |  |  | 79 |  |  | 262 |  |  | 235 |
There was a $1.9 billion contribution to our domestic defined benefit pension plans in the quarter and nine months ended September 30, 2017. There were no contributions to our domestic defined benefit pension plans in the quarter and nine months ended September 30, 2016. The following table illustrates the components of net periodic benefit cost for our defined pension and other postretirement benefit plans:
| Pension Benefits Quarter Ended September 30, |  | Other Postretirement Benefits Quarter Ended September 30,
(Dollars in millions) | 2017 |  | 2016 |  | 2017 |  | 2016
Service cost | $ | 94 |  |  | $ | 96 |  |  | $ | — |  |  | $ | 1 |
Interest cost | 281 |  |  | 302 |  |  | 9 |  |  | 9 |
Expected return on plan assets | (555 | ) |  | (554 | ) |  | — |  |  | — |
Amortization of prior service credit | (9 | ) |  | (7 | ) |  | (1 | ) |  | — |
Recognized actuarial net loss (gain) | 144 |  |  | 135 |  |  | (2 | ) |  | (1 | )
Net settlement and curtailment loss | 2 |  |  | 3 |  |  | — |  |  | — |
Total net periodic benefit (income) cost | $ | (43 | ) |  | $ | (25 | ) |  | $ | 6 |  |  | $ | 9 |
| Pension Benefits Nine Months Ended September 30, |  | Other Postretirement Benefits Nine Months Ended September 30,
(Dollars in millions) | 2017 |  | 2016 |  | 2017 |  | 2016
Service cost | $ | 280 |  |  | $ | 287 |  |  | $ | 2 |  |  | $ | 3 |
Interest cost | 838 |  |  | 908 |  |  | 22 |  |  | 25 |
Expected return on plan assets | (1,636 | ) |  | (1,669 | ) |  | — |  |  | — |
Amortization of prior service credit | (27 | ) |  | (22 | ) |  | (1 | ) |  | — |
Recognized actuarial net loss (gain) | 430 |  |  | 406 |  |  | (7 | ) |  | (3 | )
Net settlement and curtailment loss | 1 |  |  | 18 |  |  | — |  |  | — |
Total net periodic benefit (income) cost | $ | (114 | ) |  | $ | (72 | ) |  | $ | 16 |  |  | $ | 25 |
Effective January 1, 2017, a voluntary lump-sum option is available for the frozen final average earnings benefits of certain U.S. salaried employees upon termination of employment after 2016. This option provides participants with the choice of electing to receive a lump-sum payment in lieu of receiving a future monthly pension benefit. This plan change reduced the projected benefit obligation by $170 million.

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
Name: | us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration